Moyes is under the cosh and a win would ease the huge pressure on his shoulders. United are not only in danger of missing out on qualification for the Champions League but they could also fail to make Europe altogether. Wenger described the Liverpool loss as an accident and will be desperate to get his title charge back on track.

Van Persie is United's main man in attack and their biggest source of goals. Ten goals from 14 league games this season highlights his importance to the Red Devils and his goal on Sunday got them back into the game against Fulham when they were struggling for an opening. He will be up against a defender in Koscielny who has matured into a top quality centre-half and who has been solid at the back alongside Per Mertesacker at the heart of Arsenal's defence.

JUAN MATA V MESUT OZIL

The creative geniuses of both sides could be crucial to the outcome of the game which may come down to one big chance. Ozil's form has dipped in recent weeks following a scintillating start to his Arsenal career and boss Arsene Wenger will be hoping his masterful artistry with the ball will come to fruition. Mata, on the other hand, is still settling in at United but has the quality to open up any defence and his drifting in from the wings may cause problems.